ZIP code · Crystal City · Texas · United States
ZIP code 78839 — Crystal City
ZIP code 78839 serves Crystal City, Texas.
- Postal code
- 78839Single source Value from one source, not cross-checked.
- City
- Crystal City
- County
- Zavala FIPS 48507
- State
- Texas
- Country
- United States
- Coordinates
- 28.6870, -99.8264 — precision precise (locality)
View on OpenStreetMap - Population
- 7,333 (ZCTA, ACS 5-year)
- Population density
- 30 / sq mi
- Land area
- 244.2 sq mi (632.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $43,769
- Per-capita income
- $21,488
- Median age
- 33.5
- Households
- 2,668
- Housing units
- 3,053
- Median home value
- $91,900
- Median gross rent
- $448 / month
- Congressional district
- TX-23 (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 830Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 78839 with another ZIP · ZIPs within 25 miles · distance from 78839
Map of ZIP code 78839
Climate — monthly normals
Warmest month Aug (avg high 99°F), coldest Jan (avg low 44°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 67 | 72 | 79 | 86 | 91 | 96 | 97 | 99 | 93 | 85 | 74 | 68 |
| Avg low °F | 44 | 49 | 55 | 62 | 70 | 75 | 76 | 76 | 72 | 64 | 53 | 45 |
| Precip in | 1.0 | 0.8 | 1.7 | 1.3 | 2.2 | 2.1 | 2.1 | 1.9 | 2.4 | 2.0 | 1.0 | 0.8 |
NOAA 1991–2020 climate normals from the nearest station: CRYSTAL CITY (0.6 mi) · NOAA NCEI
Places in ZIP 78839
- 3 schools
- 1 colleges & universities
- 1 supermarkets
- 1 restaurants & cafés
- 2 parks
- 1 libraries
- 1 post offices
- 3 places of worship
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page